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FANE 12-250tc FULL RANGERS
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Old Croc
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Joined: 26 December 2013
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Points: 2435 		Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 12 October 2015 at 11:23pm
Originally posted by _djk_ _djk_ wrote:

They roll off hard above about 5Khz off-axis, crossing a tweeter at 5Khz is a good option.


Its an option but its not necessary at all.

Kinda takes the idea away of having a full range triple cone speaker doesnt itSmile No crossovers needed or nothing. As simple as it gets.
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Points: 1855 		Post Options Post Options   Thanks (1) Thanks(1)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 13 October 2015 at 4:47am
Originally posted by app app wrote:

Originally posted by _djk_ _djk_ wrote:

They roll off hard above about 5Khz off-axis, crossing a tweeter at 5Khz is a good option.


Its an option but its not necessary at all.

Kinda takes the idea away of having a full range triple cone speaker doesnt itSmile No crossovers needed or nothing. As simple as it gets.

And beaming like nothing else...

If you care about sound quality at all, a dedicated HF is the way forward. Without it, it's going to be, and i'm quoting a forum member here: "a bag o'noise..."
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If in the near field and on-axis you could get away with no tweeter, otherwise, a tweeter will improve things.
 
I own four of the drivers in question (in case anyone is wondering).
 


Edited by _djk_ - 13 October 2015 at 7:31am
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Points: 3038 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Andy Kos Quote  Post ReplyReply Direct Link To This Post Posted: 13 October 2015 at 10:07am
As djk says on axis this driver works really well in  small nearfield applications.

Its not so appropriate for large format applications, so it's a case of choosing the right product for the application.

A small compact budget monitor wedge is also quite achievable with one of the fane drivers, it wont cut it main stage at glastonbury, but for a small band working on a small stage it's more than adequate.
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Points: 2435 		Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 13 October 2015 at 11:42am
Originally posted by all bass all bass wrote:

Originally posted by app app wrote:

Originally posted by _djk_ _djk_ wrote:

They roll off hard above about 5Khz off-axis, crossing a tweeter at 5Khz is a good option.


Its an option but its not necessary at all.

Kinda takes the idea away of having a full range triple cone speaker doesnt itSmile No crossovers needed or nothing. As simple as it gets.

And beaming like nothing else...

If you care about sound quality at all, a dedicated HF is the way forward. Without it, it's going to be, and i'm quoting a forum member here: "a bag o'noise..."


I really care about sound quality and think that these speakers sound really good. No need for a separate hf. Directivity is not a problem its a good thing.

edit. directivity.


Edited by app - 13 October 2015 at 11:50am
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hi guys. have anybody tried this in sealed box for home hifi usage? i am planning to build 100-120 liters sealed box and use them as stereo speakers. with winisd sim, i am getting f3 at around 67hz. i shall cross them to sub at 100hz or so. 
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Originally posted by Andy Kos Andy Kos wrote:

As djk says on axis this driver works really well in  small nearfield applications.


A small compact budget monitor wedge is also quite achievable with one of the fane drivers, it wont cut it main stage at glastonbury, but for a small band working on a small stage it's more than adequate.



I couldn't agree more - it's a great driver for modest 12" monitors, just like these:




Edited by JTH - 24 November 2015 at 12:48pm
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Originally posted by coherenceaudio coherenceaudio wrote:

hi guys. have anybody tried this in sealed box for home hifi usage? i am planning to build 100-120 liters sealed box and use them as stereo speakers. with winisd sim, i am getting f3 at around 67hz. i shall cross them to sub at 100hz or so. 
 
If you're going to crossover at around 100Hz, you could use a much smaller box. It wouldn't be flat on its own but if you pay attention to the exact crossover slope etc you choose it should still be possible to achieve a decent integration.
I'll post an example this evening - don't have modelling software here at the day-job.
 
 
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Originally posted by JTH JTH wrote:

Originally posted by Andy Kos Andy Kos wrote:

As djk says on axis this driver works really well in  small nearfield applications.


A small compact budget monitor wedge is also quite achievable with one of the fane drivers, it wont cut it main stage at glastonbury, but for a small band working on a small stage it's more than adequate.



I couldn't agree more - it's a great driver for modest 12" monitors, just like these:








nice stuff!!!


Edited by bob4 - 24 November 2015 at 1:26pm
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Originally posted by DMorison DMorison wrote:

 
If you're going to crossover at around 100Hz, you could use a much smaller box. It wouldn't be flat on its own but if you pay attention to the exact crossover slope etc you choose it should still be possible to achieve a decent integration.

 
 


+1 on this! I did a quick sim in winisd, and it seems that a 20 l enclosure would do the trick. There will be a hump aroudn 130 Hz, but with a first order butterworth Filter at 150 Hz it comes out perfectly with the crossover point ( -3 dB) at 107 Hz.

Originally posted by coherenceaudio coherenceaudio wrote:

hi guys. have anybody tried this in sealed box for home hifi usage? i am planning to build 100-120 liters sealed box and use them as stereo speakers. with winisd sim, i am getting f3 at around 67hz. i shall cross them to sub at 100hz or so. 


are you talking about Fsc or the lower -3dB point ?

with 100 l enclosure the cutoff frequency I get is 59 Hz.

trying different enclosure volumes, it seems that 80 l is the point of diminishing returns. At 80 litres winisd predicts a 60 Hz cutoff, increasing box size beyond that shifts the cutoff barely at all (59 Hz @100 l, 58 Hz @ 120 l, 57 Hz @ 200 l ). So why not make it smaller?

  



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will do some more sims with smaller boxes. 
i am still not able to upload pics. will upload sim screenshots later.

i actually want speakers to work stand alone (with woofer support) for casual listening, so targetting 60hz (F3). 
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OK, if you want to run fullrange as well this won't work so well but here's an example for you.

First trace is the driver in 30l sealed with no processing (in blue).
The green curve is a theoretically ideal 100 Hz 24dB LR high pass.

In the second view, I've added a 110Hz 12dB Butterworth HPF - this brings the lower end of the response in line.

The third view adds one Parametric EQ section, this time -3.5dB at 108Hz with a Q of 1.3.

This keeps it within 1/2 a dB of the ideal for at least an octave either side of the crossover point.

This has the added advantage of keeping excursion well under control - 3.7mm at 500W (where the nominal Xmax for the driver is 5.25mm).

PS for including picture, I find it better to host them offsite on a mainstream image host like imgur then include the link to the pic; when you upload directly to the forum it compresses the file horribly and you lose a lot of image quality/detail.



Edited by DMorison - 24 November 2015 at 8:12pm
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